Sewer-cleaner.



Patented Nov. Il, |902.

L. DUBIS.

SEWER CLEANER.

(Applicatiun led Apr. 14, `1905?.)

(No Modal.)

a w no Lolli/9 ,Dl/(50128 Inventor,

Witnesses Attorneys armar LOUIS DUBOIS, OF MONTREAL, CANADA.

SEWER-CLEANER.

SPECIFICATION forming' part of Letters Patent No. 713,077, datedNovember 1 1, 1902.

Application filed April 14. 1902l Serial No. 102,703. tlIo model.)

To all whom if; rrr/(ty concern:

Be it known that I, LOUIS DUBOIS, a subject of the King of GreatBritain, residing in the city and district of Montreal, Province ofQuebec, Canada, haveinvented certain new and useful Improvements inSewer-Cleaners;- and I do hereby declare that the following is a full,clear, and exact description of the in` vention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an apparatus for cleaning sewers; and the objectin View is to provide a device which may be drawn through a sewer fromendto end, the same being pro-4 vided with blades or plates adapted toscrape the wall of the sewer and also equipped with valves which serveto collect and remove the sediment and accumulation of lth which are notordinarily carried away by the iiow of the water.

With these ends in view my invention consists of the novel constructionand arrangement of parts, which will be hereinafter described andclaimed.

In the drawings hereto annexed,forming a part of this specification,Figure 1 is a longitudinal axial section of a cleaning apparatusembodying my invention. Fig. 2 is a transverse section on the line 22 ofFig. 1. Fig. 3 is'another transverse section taken in the plane of theline 3 3 on Fig. 1 and showing the valves in their closed positions.Fig. 4 is a detached detail view of one of the valves.

The same numerals of reference denote like parts in all the figures ofthe drawings.

The frame of the cleaner is elliptical in longitudinal section andcircular in cross-section, and said frame consists of the radially andlongitudinally disposed trusses or ribs 5, of which six are shown in thedrawings, although any desired number, more or less, may be employed.

6 indicates the axial draft-rod, to which the trusses or ribs are unitedor attached, as clearly shown by Fig. 1. The end portions of the trussesare curved inwardly on converging lines, so that they will meet one withthe other and provide collars 7, which are fitted on the end portions ofthe draft-rod, and these collars are held in place by means of the rings8, which are screw-threaded to receive the caps 9, which are providedwith the drafteyeslO, to which may be fastened the draftcable that isadapted to draw the cleaner through the sewer-pipe. The trusses or ribsare tapered laterally and are thickened vertically toward their ends inorder to add Strength and rigidity to the structure. These trusses areprovided at points intermediate of their length with the segmentalblades or plates 11, which are arranged to have abutting engagementabout the middle of the skeleton frame that is formed by the series oftrusses or ribs, such abutting engagement of the plates or blades beingclearly shown by Fig. 2 of the drawings. The outer convex edges of thecurved portions of the trusses or ribs are beveled or sharpened, so asto form a plurality of cutting edges at each 'end of the skeleton frame,and eachplate or blade l1 of the series is provided with the curved endedges l2, that are also beveled or sharpened to form the cutting edges,whereby the series of plates or blades and the series of truss bars orribs may scrape the walls of the sewer, so as to remove any sediment oryfilth that may lodge upon the inner surface of the sewer.

' It will be noted that the collars 7 formed by the union of theconverging ends ofthe plurality of truss bars orlribs are engaged withthe end portions of the draft-rod and by the caps which are screwed onthe draft-rod; but to contribute to the stability and strength Yof thestructure I have also provided the collars 13, which are held by theclamping-screws 14 on the draft-rod, said collars 13 engaging with theinner portion of the collars 7 of the skeleton frame and being therebydisposed within the limits of said skeleton frame.

ldesignates a hub which is fitted on the ment with similar bearings orsockets 2l, that are provided in the Scrapers or plates 1l. A singleseries of sectoral or triangular valves 22 is provided within theskeleton frame 6 formed by the truss-bars and the scraperblades, eachvalve having at opposite ends the pintles 2:2, which are adapted to 1itinto the radial sockets that are provided in the hub 15 and thescraper-blades. The alined sockets in the hub and the scraper-blades areso arranged that when the valves are mounted therein the pivoted edgesof said valves are directly in front of the radial braces 18, one ofsaid valves being provided for each brace, as shown by the drawings. Thevalves are adapted to swing on the radial pivots, and when closed theirfree edges lie in contact with adjacent brace-bars.

Vhen the device is in service, by drawing it through a sewer the cuttingedges of the blades and the truss-bars are adapted to scrape the wallsof the sewer, and the valves are made to close together in the positionshown by Fig. 3, so as to gather the sediment, filth, the., whereby itmay be brought within the reach of a person who is prepared to removeit. By drawing the cleaner backward through the sewer the valve willopen automatically, and thereby prevent clogging of the cleaner in thesewer.

I claiml. An apparatus for cleaning sewers comprising a skeleton frameconsisting of longitudinal ribs lying in a radial plane and connectedtogether at their ends by suitable hubs, a central draft-rod connectingsaid hubs, and a series of fiattened blades at the central portion ofthe ribs, said blades being of arcuate section and combining at theiredges to form a tube of circular section externally, the forward edgesof said blades being set at an angle to the direction of m0- tion andbeing sharpened to form cutting edges, substantially as described.

2. An apparatus for cleaning sewers comprising a skeleton frameconsisting of longitudinal ribs lying in a radial plane and connectedtogether at their ends by suitable hubs, a central draft-rod connectingsaid hubs, a series of flattened blades at the central portion of theribs, said blades being of arcuate section and combining at theiredgesto form a tube of circular section externally, the forward edges of saidblades being set at an angle to the direction of motion and beingsharpened to form cutting edges, and said ribs having also cutting edgesformed thereon, and a series of self-closing valves pivotally supportedon radial axes about the draft-rod and adapted to completely close thetube formed by the meeting edges of the said blades at approximately thecentral portion thereof, substantially as described.

3. An apparatus for cleaning sewers comprising a skeleton frame havingsegmental scraperbladesorplatesarrangedinpermanent contact with eachother, a draft-rod, a hub mounted on the draft-rod, and asingle seriesof valves pivotally supported on the hub and Within the scraper bladesor plates, substantially as described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

LOUIS DUBOIS.

Vitnesses:

J. A. MARION, T. MYNARD.

